The mRNA codons 5′-CAA-3′ or 5′-CAG-3′ are translated as the amino acid glutamine by __________.

• A. the tRNA with an anticodon 5′-GUU-3′ and glutamine at its other end
• B. tRNA molecules that have been charged with glutamine by two different aminoacyl-tRNA synthetases
• C. separate tRNA molecules with anticodons 3′-GUU-5′ and 3′-GUC-5′, respectively
• D. the same tRNA with the anticodon 3′-GUU-5′